Analgesics, Tranquilizers, Antidepressants — Prelims Questions

Which of the following drugs primarily acts by inhibiting the cyclooxygenase (COX) enzymes, thereby reducing the synthesis of prostaglandins?

Which of the following is a benzodiazepine, primarily used as an anxiolytic, that enhances the effect of GABA at the GABA-A receptor?

A patient is prescribed a drug that selectively blocks the reuptake of serotonin, leading to increased serotonin concentration in the synaptic cleft. Which class of drug is most likely being administered?

Which of the following statements about Paracetamol (Acetaminophen) is INCORRECT?

Which of the following opioid analgesics is a prodrug, meaning it is metabolized in the liver to its active form, morphine?

Which of the following side effects is most characteristic of Tricyclic Antidepressants (TCAs) due to their blockade of muscarinic acetylcholine receptors?